Crank case ventilator for engines



NOV. 24, 1931. r FALLER 1,833,394

CRANK CASE VENTILATOR FOR ENGINES Fiied March 5, 1930 2 Sheets-Sheet 1 Nov. 24, 1931.

Filed March 5, 1930 2 Sheets-Sheet 2 gwuehtov Patented Nov. 24, 1931 UNITED STAT JAMES H. FALL-ER, OF NEW ORLEANS, TJOUISIANAM i c cRANK CASEY VENTILAT R ron ENGINES Application filed March 5,

V The object of my invention is to provide means to draw off all dilution in the form of vapor that accumulates in the base (crank case) of internal combustion engines, and a means for creating asuction for clearing fumes which are accumulated in the crank case, etc. 1 g

It is known that dilution is gasoline that does not burn in the combustion chamber, and passes the piston rings and thins the body of oil which results in a very poor lubrication in the engine. These vapors are carried 7 either to the carburetor and burned, or

thrown off under the car.

In the drawings:

Figure 1 is an outline side elevation of an engine equipped with my invention.

Figure 2 is a side elevation of my invention detached.

Figure 3 is a front elevation of Figure 2.

Figure 4 is a vertical central longitudinal sectional view of my attachment. 7

The reference numeral 5 designates an engine of approved type, having the usual fan 6 and breather pipe 7.

My attachment A is mounted on the breather pipe 7 and comprises a main body 8 semiglobular with an open front. In this body is positioned a tube 9, the lower end of which projects below the body 8, and is adapted to fit into the breather pipe 7 of the engine and support the attachment in operative position. The upper end 10 of the pipe '9 extends through and above the body 8. This has a of adding or filling the base with oil. A tube 11 opens into and through the rear wall of the body 8 and extends rearwardly therefrom, to which is secured one end of the pipe 12 which discharges to atmosphere.

The pipe 9 has an opening through its rear wall, within the body 8, in which is secured one end of the tube 13, the other end of the tube 13 extending a substantial distance into the tube 11, and is equally spaced from the walls of the tube 11, as clearly seen in Figure 4:.

As shown in Figure 1, my attachment is mounted on the breather tube and is positioned back of and near to the fan 6 with detachable but air tight cover for the purpose 1930. Serial No. 433,357.

the open'end of the body 8 facing the fan, so that theair from the fan is blown directly lnto the body 8 around the tube '9, which is attached to the breather tube, the air currents passing rearwardly in the body 8 to and through the restricted passage between the tubes 11 and 13 causes a vacuum at the free end of the tube 13 in the tube 11 which draws the vapors out of the enginebase up through the tube 9, thence to the tube 13, from which they" are discharged into the tube 11, from which they pass to atmosphere through pipe 12. p

It will be noted that by my inventionair is not blown into the baseto discharge the vapors therefrom, but on the contrary the vapors are drawn from the base by the air from the fan or air which blows in through the radiator when the car is in motion, or by means of a special fan for that purpose only creating '70 a vacuum in the tube 11. This is an important feature in my invention, because when air from the outside is introduced-into the base to force the vapors from the base it carries with it'and introduces into the crank case road dust which is positively injurious to the engine.

In the tube 11 I mount a butterfly or shut v off valve 1 1. This valve may either be thermostatically controlled or manually controlled. The function of this valve is to block, or partly block, the draft as may be desired, at times w-henit is not necessary to rev move all or any of the dilution from the oil.

What I claim is: Q 1. An attachment for an internal combustion engine to draw the vapors from the crank case thereof; said attachment includinga ho1- low body, a tube extending vertically through said body with its end portions projecting re- 0 spectively beyond opposite sides of the body, one of said ends being adapted to communicate with the breather pipe of the engine, and telescoping tubes spaced from each other, one of which is in constant open communication with said vertically extending tube.

2. An attachment for an internal combustion engine to draw the vapors from the crank case thereof; said attachment including a hollow body, a tube extending vertically through 100 said body With its end portions respectively projecting beyond opposite sides of the body, one of said ends being adapted to communi- Cate-With the breather pipe of the engine, and telescoping tubes spaced from each other, one of Which is in constant open communication with said vertically extending tube ithin said body, the other of Which telescoping tubes is in constant communication With said body. 7 10 8. An attachment for an internal combustion engine to drawthe vapors from the crank case thereof; said attachment including a hollow body, a tube extending vertically through said body with its ends respectively projecting above and below the same, one of said ends being adapted to communicate With the breather pipe of the engine andtelescoping tubes spaced from each other, one of Which is in constant open communication With said m vertically extending tube, and a draft con-- trolling valve in one of said telescoping tubes.

4. In a crank case ventilator for engines, a body of substantially semi-globular form having an open front, a tube extending ver- =g5 tically through said body With its end portions projecting respectively above and below the same, one'of said ends being adapted to communicate With the breather pipe of the engine, a second tube extending fromthe rear #9 of the body and communicating therewith, a

third'tube communicating with the first tube and extending rearwardly therefrom into the second tube in spaced relation to the latter,

7 and a controlling valve or damper in said sec- ,38 ond tube.

5. An attachment "for an internal combustion engine, to draw the vapors from the crank casethereof; said attachment comprising a hollow body, a tube vertically disposed With- 49 in and spaced from the Walls ofthe body With itsends extending respectively beyond opposite sides of the body, one of said ends being adapted to communicate With the breather pipe, a tube extending rearWardly from and through the rear Wall of said body and in constant open communication With the body, a tube extending from the said vertical tube and telescopically disposed Within and spaced from said rearWardly extending tube; 50; In testimony whereof I aflix my signature.

JAMES H. FALLER. 

